lex-cognitive-contagion

SIR-inspired cognitive/emotional contagion modeling for brain-modeled agentic AI. Models how beliefs, emotions, behaviors, and cognitive patterns spread between agents.

Belief systems and emotional states spread between agents like infections. This extension models that propagation using epidemiological SIR dynamics: susceptible agents can be exposed, infected agents spread the meme, recovered agents gain resistance, and immunized agents are fully protected. Four contagion types are supported: emotional, belief, behavioral, and cognitive.

Each agent has a resistance score; each meme has a virulence score. Transmission probability is a function of both. spread_step runs one simulation timestep: attempting transmissions and applying natural recovery.

client = Legion::Extensions::CognitiveContagion::Client.new

meme = client.create_meme(
  label: 'catastrophizing',
  contagion_type: :cognitive,
  virulence: 0.6
)

client.register_agent(agent_id: 'agent_alpha', resistance: 0.4)
client.register_agent(agent_id: 'agent_beta', resistance: 0.7)

client.infect_agent(meme_id: meme.id, agent_id: 'agent_alpha')
client.spread_step(meme_id: meme.id)

client.epidemic_report(meme_id: meme.id)
# => { susceptible: 0, infected: 1, recovered: 1, virulence_label: :epidemic }

bundle install
bundle exec rspec
bundle exec rubocop

MIT